Search Results - Practical Machinist - Largest Manufacturing Technology Forum on the Web
Close
Login to Your Account

Search:

Type: Posts; User: 13engines

Search: Search took 0.00 seconds.

  1. Replies
    7
    Views
    1,399

    300 holes at 1 inch deep I would totally give up...

    300 holes at 1 inch deep I would totally give up on that HSS drill and get 135deg cobalt screw machine length. In fact you'd better get a couple-few unless you're good at sharpening. 350 rpm at...
  2. Replies
    7
    Views
    1,399

    You don't say how deep or how many or if coolant,...

    You don't say how deep or how many or if coolant, but a safe speed for going say 2-3 diameters deep is 315rpm at 2.21ipm. (0.0035ipt). You could likely bump that up to 0.005 - 0.007ipt if things are...
Results 1 to 2 of 2